JP5534829B2 - Band saw for cutting small ends - Google Patents

Description

  The present invention relates to a manually operated small band cutting saw (band saw machine) excellent in workability and safety suitable for cutting a block meat and the like into small pieces. The manual operation method referred to here is a method in which a band edge is manually cut into an object to be cut and a fore edge is cut.

  A slicer using a round blade or a band blade or a vertical band saw is used for cutting small pieces of block meat or block frozen foods. Among these, for example, a slicer using a band blade is disclosed in Patent Documents 1 and 2 below, and a vertical band saw is disclosed in Patent Document 3 below.

JP 2004-34281 A JP 2006-224262 A JP 2007-160433 A

  The slicer described in Patent Document 1 projects the block meat from the front end of the meat box and applies it to the backing plate, and in this state, the meat box reciprocates in one direction in a horizontal plane and travels vertically at a fixed position. The band blade is cut into the block meat protrusion from the meat box, and the operation is repeated to slice the block meat continuously to a certain thickness.

  In addition, the slicer described in Patent Document 2 has a band blade that runs horizontally at a fixed position on a block meat that is intermittently fed from the meat box while reciprocating the meat box holding the block meat in a substantially vertical direction. Cut from top to bottom and repeat the action to slice the block meat to a certain thickness.

  The cutting work by these slicers is completely mechanized, so that the operator does not need to approach the band blade and is excellent in work safety.

  However, these slicers are powerful when slicing a large amount of block meat into pieces of constant thickness, but they are not a cutting device that supports manual work, so their size, shape, throughput, etc. are frequent. It is not suitable for use in cutting a changing workpiece into a desired length.

  On the other hand, the band saw machine described in Patent Document 3 performs cutting with a band blade that is manually moved by an operator by manually feeding an object to be cut placed on a work table.

  In the band saw machine of this Patent Document 3, in consideration of safety, only the area necessary for cutting is opened in each part of the band blade, and the size of the open area is the size of the object to be cut in other portions. It is covered with a cover that changes according to the situation, but the cutting edge of the band blade faces the operator, and the operator advances the cutting while approaching the moving band blade. It's not a device.

  For example, when cutting frozen fish, frozen meat, etc., there is a possibility that gloves worn by the operator may freeze on the frozen product and get caught at the position of the band blade. In addition, the band saw machine of Patent Document 3 needs to be repeatedly pulled back in addition to feeding the workpiece, so that the workability is not good.

  In some band saw machines for metal processing, a cutting device is configured by combining a band blade, a drive source, a cover, and a frame, and the cutting device is vertically moved with a horizontal support shaft arranged on the tip side as a fulcrum. There is one that causes the object to be cut to cut the band blade from above.

  However, a band saw for cutting food with such a structure was prototyped and a block meat cutting test was performed. Especially in the case where the contact length of the band blade with the block meat was long and the friction increased, the meat mass was almost horizontal. Cutting is not successful due to dragging by the band blade running in the direction, and it is difficult to work because the operator needs to swing the cutting device by raising and lowering the arm greatly, performance that is satisfactory in practice and good operation It was difficult to ensure the property.

  In addition to this, there is a type in which a cutting device is mounted horizontally between a pair of upright struts, and it is moved up and down. However, it takes time to move the cutting device up and down, and high efficiency work cannot be expected. In addition, since the band blade travels in a horizontal direction, stable performance is not exhibited in cutting meat chunks.

  This invention makes it a subject to implement | achieve and provide the band saw for a small form cutting | disconnection which improved the workability | operativity and safety | security at the time of cut | disconnecting block meat, a block frozen food, etc. small by manual operation.

In order to solve the above-described problems, the present invention provides a band saw for cutting a fore edge configured as follows.
A pair of drive wheel and driven wheel, endless band blades spanning between the wheels, a rotational drive source of the drive wheel, a cover surrounding an unexposed area of the band blade, a frame for supporting these, and a frame thereof A cutting device combined with a first grip to be attached;
A horizontal support shaft that suspends the cutting device so that the drive wheel is on the upper side, a support that supports the horizontal support shaft, a moving path of the band blade, and a movement of the band blade through the workpiece. A work table provided with a restraining wall that supports the front of the direction, and a pad that can adjust the receiving position for receiving the tip of the workpiece on the work table,
The cutting device is configured such that an operator grasps the first grip with his / her hand and pushes the lower side where the driven wheel is located toward the front (back side) from the operator's near side in a direction away from the operator , By the operation, the cutting device swings about the horizontal support shaft, and the band blade passes through a plane perpendicular to the horizontal support shaft. When the cutting device is pushed and moved, the operator A band saw for cutting a fore edge that is cut by being cut into an object to be cut supported by the work table and the restraining wall while running with a band blade facing away from the top toward the bottom .

Preferred forms of such a band saw are listed below.
(1) A push plate that opposes the contact plate on the work table, a slide mechanism that supports the push plate so that the push plate can be advanced and retracted toward the contact plate side, and retracted from the work table, and the first First detection means for detecting that the grip is gripped by an operator and outputting a detection signal is provided, and the cutting device is driven when the detection signal is output from the first detection means. What
(2) The push plate has a second grip, and has second detection means for detecting that the second grip is gripped by an operator, and the first detection means and the second detection means. The cutting device is driven when detection signals are output from both.
(3) A shooter is provided below the work table that receives a cut portion of the object dropped from the work table and slides it in a predetermined direction.
(4) The work table includes a fixed table and a movable table that are divided from each other, and the movable table is disposed so as to be capable of approaching and separating from the fixed table, and between the fixed table and the movable table. The one that can create a gap to drop the part to be cut.
(5) Provided with return means for returning the cutting device pushed and moved to the cutting end point to the initial position (position before the operator pushes and moves it). The return means is preferably constituted by a balance weight attached to the frame.

In the band saw of the present invention, the operator pushes and moves the cutting device suspended so as to be able to swing forward from the front, and cuts the traveling band blade into the workpiece. Since it is such a structure, the outward band blade exposed outside turns its back to the operator. Moreover, as the cutting progresses, the band blade escapes away from the operator.
Therefore, the safety is high, and the operator does not accidentally touch the band blade to be injured.

  In addition, the cutting device is pushed forward from the front to cut the band blade into the object to be cut, so that it is not necessary for the operator to raise and lower the arm greatly, and the operability is good and the operation is easy.

  In addition, since the outgoing band blades travel from top to bottom and are cut into the workpiece supported by the work table, the support of the workpiece is stable, and the cutting is stable, smooth and reliable. To be made.

  In particular, meat that has been cut into a plate shape has a vertical orientation in the thickness direction to improve support stability, and the contact length of the band blade is shorter than when cutting with a horizontal running band blade. These also contribute to improving the stability of cutting.

  When a push plate is provided, and in addition to this, the first and second detection means are provided, the first grip is gripped by the operator, and the push plate is operated by the operator. Only the band blade of the cutting device can be driven because the operator's hands are used for the operation while the band blade is being driven. Never take a hand by mistake. Therefore, the safety of the work is further enhanced, and there is no finger injury or cutting accident.

  Further, the second detecting means is provided with a second grip on the push plate, and uses the fact that the second grip is gripped by the worker as a detection signal that the push plate is operated by the worker. Can be configured with an inexpensive on / off switch.

  Furthermore, when the work table is provided with a gap for dropping the cut part of the workpiece and a shooter that receives the cut part and slides it in a predetermined direction, the operator moves his hand to the front of the band blade. This eliminates the need to take out the cut portion of the object to be cut, thereby improving the workability and preventing a situation where the hand is caught on the stopped band blade.

  In addition, in the case where the cutting device is returned to the initial position by the return means, the cutting device is naturally returned to reduce the work burden on the operator. In addition, when the return means is constituted by a balance weight, the function of the return means does not deteriorate over time, and the maintenance check and replacement of the return means are unnecessary.

The perspective view which shows the outline | summary of the whole band saw of this invention Side view of the band saw of FIG. Rear view of the band saw in FIG. Top view of the band saw in FIG. Top view of the work table of the band saw of FIG. The figure which looked at the contact plate provided in the band saw of FIG. 1 from the front side of the band saw Sectional view of the shooter provided in the band saw of FIG. FIG. 1 is a plan view of a pressing plate provided on the band saw of FIG. Side view of a push plate provided on the band saw of FIG. The front view of the cutting device provided in the band saw of FIG. 1 is a longitudinal sectional view of a cutting device provided in the band saw of FIG. The perspective view which shows the positional relationship of a band blade and a restraint wall when the cutting device of a band saw of FIG. 1 moves to a sending end point.

  Embodiments of the present invention will be described below with reference to FIGS.

  As shown in FIGS. 1 to 4, the band saw for saw cutting according to the present invention is provided on a pedestal 1, a support column 2 standing on the pedestal, a horizontal support shaft 3 supported by the support column, and the pedestal 1. Work table 4, pad 5 provided as an essential element on the work table, push plate 6 provided as needed, operation panel 7, shooter 8, cutting device 20, and return means for the cutting device 9 is combined. The cutting device 20 is provided with a first grip 10 that is gripped and pushed by an operator A with one hand (right hand in the illustrated device).

  As shown in FIGS. 1 and 3, the support columns 2 are installed in pairs on the left and right sides of the pedestal 1 so as to stand in a parallel posture. A horizontal support shaft 3 is horizontally mounted between the two support columns 2 and 2, and the cutting device 20 is suspended by the horizontal support shaft 3 so as to be swingable.

  When the horizontal support shaft 3 has a cantilever structure, one support column 2 may be used. However, as shown in the figure, two support columns 2 are provided and the horizontal support shaft 3 has a double support structure with both support columns. The suspension stability of 20 can be improved.

  The work table 4 includes tables 4a and 4b that are divided into two in the width direction shown in FIG. 5 and standing restraint walls provided along the edge of the back side of the table 4a (the back side as viewed from the worker A side). 4c, and has a moving path (gap serving as a passage) 4d of the band blade between the tables 4a and 4b. The table 4a is a fixed table, and the table 4b is a movable table movable in a direction away from the table 4a (rightward in FIG. 6).

  The movable table 4b is provided with a slide mechanism (not shown) including a slide guide parallel to the horizontal support shaft 3, and is movable in the longitudinal direction of the horizontal support shaft 3 by being supported by a slider of the slide mechanism. Can do. Although the illustrated movable table 4b has such a structure, it is not essential that the table 4b is movable.

  The backing plate 5 is a plate that receives the tip of the workpiece W on the work table 4, and adjusts the receiving position, that is, the distance L from the moving path 4d shown in FIG. The cutting length of the cut object W is changed.

  In order to provide the function, a slide mechanism 11 including a slide guide 11a (which is parallel to the horizontal support shaft 3) shown in FIG. 6 and a slider 11b guided by the slide guide 11a is provided, and the contact plate 5 is supported by the slider 11b. The slider 11b can be moved to move in the direction parallel to the horizontal support shaft 3. The slider 11b may be either one that performs numerical control or the like and is automatically moved to a predetermined position by the force of the drive source, or one that is moved by hand.

  As shown in FIG. 8, the pressing plate 6 is opposed to the contact plate 5 on the work table 4. The push plate 6 is provided with a slide mechanism 12 including a slide guide 12a parallel to the horizontal support shaft 3 and a manual slider 12b, and the push plate 6 is attached to the slider 12b so that the slider 12b and the contact plate 5 side. It is possible to move forward and backward.

  Further, the slide guide 12a is constituted by a so-called round bar, and the slider 12b is fitted into the gap so that the slider 12b can be rotated about the guide on the slide guide 12a as shown in FIG. The push plate 6 can be retracted from the work table 4 by the rotation.

  Even if the push plate 6 is connected to the slider 12b by a hinge, the push plate 6 can be retracted. It is also possible to provide the slide guide 12a with an extension portion that extends out of the work table 4, and the push plate 6 can be retracted to the extension portion, and the mechanism for retraction is not limited to a rotary type.

  The push plate 6 is provided with a second grip 13 that the operator A grips with the other hand (left hand in the illustrated apparatus). A force is applied to the second grip 13 arranged behind the push plate 6 in the pushing direction, and the push plate 6 is slid. The push plate 6 pushes the workpiece W toward the contact plate 5 side.

  The operation panel 7 stores therein a control circuit that controls the operation of each part of the band saw, and has a start switch, a display panel, and the like on the surface. The operation panel 7 is attached to the base 1 and disposed below the work table 4, but the installation location is not particularly limited.

  The shooter 8 is a slide provided with a predetermined inclination angle with respect to a plane, and is disposed below the work table 4. The shooter 8 is connected to a frame 26 of a cutting device 20 described later, and swings together with the cutting device 20. When the cutting device 20 returns to the initial position, one end side (entrance side) of the shooter 8 protrudes toward the front side of the table 4b, and the cut portion dropped from the front edge of the table 4b is on one end side (inlet side). Then, it flows in a predetermined direction (the band saw in the figure is on the back side) and slides down on a transport tray set at the outlet.

  The return means 9 can be constituted by a spring, a cylinder actuator, or the like, but is preferably a balance weight that is inexpensive, has no fear of function deterioration, and does not require maintenance, inspection, replacement, or the like. The return means 9 employed in the illustrated band saw is composed of a balance weight that is heavier than the cutting device 20, and the cutting device 20 returns until the balance weight moves directly below the horizontal support shaft 3.

  The return means 9 is a preferable element that reduces the work load. However, the cutting device 20 can be returned by the operator.

  The return end point of the cutting device 20 is the initial position of the device. At the initial position, the cutting device 20 is inclined as shown in FIG. 2, and the lower side of the device is closer to the operator A than the horizontal support shaft 3 ( Placed on the front side).

  The cutting device 20 includes a pair of driving wheel 21 and driven wheel 22 shown in FIGS. 10 and 11, an endless band blade 23 extending between these wheels, a rotational driving source (motor) 24 for the driving wheel 21, A cover 25 that surrounds the unexposed area of the band blade 23, a frame 26 that supports these, and a first grip 10 that is attached to the frame are combined.

  The illustrated cutting device 20 can swing with the drive wheel 21 on the upper side and the driven wheel 22 on the lower side so that the upper side is the horizontal support shaft 3 and the horizontal support shaft 3 is the fulcrum. Although it is supported, the drive wheel 21 may be on the lower side and the driven wheel 22 may be on the upper side.

  The driving wheel 21 and the driven wheel 22 have postures in which the axes of the respective rotation centers face the swinging direction of the cutting device 20, and for this reason, the band blade 23 spanned between the two wheels is the length of the horizontal support shaft 3. It has a thickness in the direction.

  The band blade 23 has the blade tip facing forward and facing away from the operator. The band blade 23 exposes a region 23 a (part of the forward path) involved in cutting from the cover 25. Further, the band blade 23 travels from the top to the bottom on the forward path involved in the cutting, and the band blade 23 is perpendicular to the horizontal support shaft 3 by the swing of the cutting device 20 with the horizontal support shaft 3 as a fulcrum. It is configured to move in. As shown in FIG. 12, the band blade 23 moves in the cutting direction until the cutting edge passes through the wall surface of the restraint wall 4c.

  The first grip 10 is provided with a lever-operating first detection means 14 (see FIG. 1) that detects that the first grip 10 is gripped by an operator and outputs a signal. The second grip 13 is also provided with a second operation means 15 for button operation (see FIG. 8) for detecting that the second grip 13 is grasped by an operator and outputting a detection signal.

  The illustrated first detection means 14 and second detection means 15 are constituted by switches that can be operated with a fingertip, but may be detection means other than switches.

  The second detection means 15 detects that the push plate 6 is operated by an operator and outputs a detection signal. Therefore, the same object can be achieved by replacing the workpiece W pressed by the pressing plate 6 with a pressure sensor or the like that the workpiece W is received by the contact plate 5. However, the second detection means 15 is not essential.

  Note that the illustrated band saw has a structure in which the worker A moves the cutting device 20 with the right hand, but the structure may be such that the right and left positional relationship of each element is changed and the cutting device 20 is moved with the left hand. The following description is given by taking as an example a case where the operator operates the cutting device 20 with the right hand.

  In the illustrated example of the band saw for cutting a small edge, the worker A presses the workpiece W against the contact plate 5 with the left hand, grasps the first grip 10 with the right hand, and moves the lower side of the cutting device 20 forward from the front side where the worker is present. Push and move.

  When the length (size in the feeding direction) of the workpiece W is long, the push plate 6 is retracted from the work table 4 so that the workpiece W can be fed directly with the left hand. The cutting device 20 is driven when the detection signal is output from 14.

  Further, when the cutting of the fore edge advances and the workpiece W is shortened and the left hand of the worker performing the feeding approaches the moving path 4d, the push plate 6 is returned onto the work table 4 and the second grip 13 is moved by the worker. By grasping with the left hand and simultaneously turning on the second detection means 15 with the fingertip and performing the work in this situation, the detection signals are output from both the first and second detection means 14 and 15. Only the cutting device 20 is structured to operate.

In this way, the drive circuit of the rotation drive source 24 can be switched, and the cutting device 20 is operated based only on the detection signal from the first detection means 14, and the first and second detection means 14, The configuration in which the operation mode can be selected based on the detection signals from both 15 has an advantage that the cutting can be performed even when the push plate 6 cannot be used because the workpiece W is too long.
Even when the second detection means 15 is omitted and the cutting device 20 is operated based on the detection signal of the first detection means 14 and the workpiece is fed in this situation, the left hand pressing the workpiece Is not forcibly brought in front of the band blade operated with the right hand (no need to bring it by using the push plate 6). Since the work is performed with sufficient awareness of the danger, safety is sufficiently ensured.

  When the cutting device 20 is swung and the lower side of the device is pushed and moved, the driven band blade 23 is cut into the workpiece W on the work table 4. At this time, the band blade 23 moves forward while traveling from top to bottom, and for that purpose, the workpiece W is pressed against the table surface of the work table 4 and the restraining wall 4c in the moving direction of the band blade, As a result, the problem that the workpiece W is moved by being dragged by the band blade 23 does not occur, and stable cutting is performed.

  Further, the cutting device 20 after completion of the cutting is restored to the initial position without applying a large force because the restoring force is applied from the restoring means 9. The operator simply feeds the workpiece W with his left hand, extends the right hand holding the first grip 10 forward, pushes and moves the cutting device 20, and does not need to move his arm from top to bottom. The burden can be reduced and workability can be improved. In addition, the cutting is performed while the band blade facing away from the worker is released, so that safety is high.

  If the portion of the workpiece W to be cut is small, a gap necessary for discharge is generated between the fixed table 4a and the movable table 4b, and the cut portion is directly placed on the shooter 8 from the cut position. Can be dropped.

  When the portion to be cut is relatively large, it is not preferable to create a gap larger than the cutting portion between the fixed table 4a and the movable table 4b because the support stability of the object to be cut is deteriorated. It is preferable that the operator pulls the portion that has been cut off the forehead to the near side and drops it onto the shooter 8 from the near side edge of the table 4b.

  A band saw having an exemplary structure having a height of 2000 mm, a width of 1300 mm, and a depth of 1150 mm was prototyped. The band saw was used for cutting tests of frozen block meat, non-frozen block meat, thigh meat with chicken bones, and pork meat with ribs.

  As a result, in the prototype band saw of the structure in which the band blades travel in the horizontal direction (comparative example), the meat lump was dragged by the band blades and the cutting was not successful, whereas the band saw of the present invention performed stable cutting. It was.

  In addition, the operator does not have to raise and lower his arms greatly, and the band blade escapes from the operator when cutting, making the operation easy and safe.

DESCRIPTION OF SYMBOLS 1 Pedestal 2 Support | pillar 3 Horizontal support shaft 4 Work table 4a Fixed table 4b Movable table 4c Restraining wall 4d Movement path 5 of band blade 6 Stopper plate 6 Pushing plate 7 Operation panel 8 Shutter 9 Returning means 10 , 12a Slide guide 11b, 12b Slider 13 Second grip 14 First detection means 15 Second detection means 20 Cutting device 21 Drive wheel 22 Drive wheel 23 Band blade 24 Rotation drive source 25 Cover 26 Frame A Worker W Cut Object L Distance from the moving path of the band blade to the backing plate

Claims (5)

A pair of drive wheel (21) and driven wheel (22), an endless band blade (23) spanning between these wheels, a rotational drive source (24) of the drive wheel, and an unnecessary exposure area of the band blade A cutting device (20) that combines a surrounding cover (25), a frame (26) that supports them, and a first grip (10) that is attached to the frame;
A horizontal support shaft (3) for suspending the cutting device (20) so that the drive wheel (21) is on the upper side and swinging the cutting device (20);
A column (2) that supports the horizontal spindle (3);
The movement path (4d) of the band blade and the restraint wall (supporting the object to be cut (W) in front of the movement direction of the band blade (
A work table (4) provided with 4c);
Having a backing plate (5) capable of adjusting the receiving position for receiving the tip of the workpiece (W) on the work table,
The cutting device (20) is a direction in which the operator grips the first grip (10) with his / her hand and moves the lower side with the driven wheel (22) from the front side where the operator is present to the front side and away from the operator. The cutting device (20) is swung with the horizontal support shaft (3) as a fulcrum, and the band blade (23) passes through a plane perpendicular to the horizontal support shaft (3). Configured as
When the cutting device (20) is pushed and moved, the band blade facing away from the worker travels from top to bottom and is supported by the work table (4) and the restraint wall (4c). A band saw for cutting a fore edge that is configured to be cut by being cut into an object to be cut (W).   On the work table (4), a pressing plate (6) opposed to the contact plate (5), and the push plate can be advanced and retracted toward the contact plate (5), and on the work table (4). And a first detection means (14) for detecting that the first grip (10) is gripped by an operator and outputting a detection signal. The band saw for cutting a fore edge according to claim 1, wherein the cutting device (20) is driven when a detection signal is output from the detection means (14).   The push plate (6) has a second grip (13), and has second detection means (15) for detecting that the second grip (13) is gripped by an operator, The band saw for cutting a fore edge according to claim 2, wherein the cutting device (20) is driven when detection signals are output from both of the detection means (14) and the second detection means (15).   The small edge according to any one of claims 1 to 3, wherein a shooter (8) is provided at a lower part of the work table (4) for receiving a cut portion of the workpiece dropped from the work table (4) and sliding it in a predetermined direction. Band saw for cutting.   The band saw for small edge cutting according to any one of claims 1 to 4, further comprising return means (9) for returning the cutting device (20) pushed to the cutting end point to an initial position.

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